한국자기학회:학술대회 개요집 (Proceedings of the Korean Magnestics Society Conference)

한국자기학회 (The Korean Magnetics Society)
권호 표지

Ultra-Soft Magnetic Properties in Nanocrystalline $Fe_{81}B_{11}Nb_7Cu_1$ Alloy

  • Lee, Heebok (Dept. of Phys. Education, Kongju National Univ.) ;
  • Lee, Kyeong-Jae (Division of Material Sci., Chung-nam National University) ;
  • Kim, Yong-Kook (Division of Material Sci., Chung-nam National University) ;
  • Yoon, Sung-Ho (Division of Material Sci., Chung-nam National University) ;
  • Kim, Taik-Kee (Division of Material Sci., Chung-nam National University) ;
  • Yu, Seong-Cho (Dept. of Phys, Chungbuk National University)
  • 발행 : 2000.09.01
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초록

The extremely soft magnetic behaviors in the nanocrystalline Fe$_{81}$B$_{11}$Nb$_{7}$Cu$_{1}$ alloy annealed at 450 $^{\circ}C$ and 550 $^{\circ}C$ for 1 hour respectively in a vacuum were obtained, and examined by means of the magnetoimpedance(MI) effect and the incremental permeability. Because the MI effect can be obtained only in ultra-soft magnetic materials, the improvement of magnetic softness by proper thermal treatment was carefully monitored by the MI effect for all annealed samples. The changes of the incremental permeability as a function of an external field were also measured to verify the magnetic softness along with the MI measurement.ent.

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